Still not sure what they mean by working gear ratio and rear end ratio. If I use the default G35 settings, it's nothing like what we have postd here.

I assume since I'm auto:

Rear end ratio should be 1:1 in 4th gear. And then the working gear should be 3.357? That's way off from what they use as a default.

I think the working gear should be 1:1 and the rear end ratio should be 3.357.

 

Odd. I didn't get the Speed Tracer user's manual. I had to print 60 pages from their site. Good thing I was at work